Goals and tools

When you finish this module, you will be able to:

1. Formulate a precise question relevant to a prognosis study
2. Understand what a cohort study is
3. Understand what a case-control study is
4. Determine if the study is valid

You should have the following article available while you work through this module:

• Ho KK, Anderson KM, Kannel WB, et al. Survival after the onset of congestive heart failure in Framingham heart study subjects. Circulation 1993; 88: 107-15.